Pro-X 28.SIS2424-2 Steel Intake Valve and Spring Kit drive-primary-drive-inspection-covers 2013 Honda CB500X

2013 Honda CB500X

1999-2001 Harley Davidson FXST Softail Standard

SAE J2825 sound level compliant

2004 VOR 450 MX

2005 Kawasaki KX250

Pro-X 28.SIS2424-2 Steel Intake Valve and Spring Kit drive-primary-drive-inspection-covers 2013 Honda CB500XMaterial: Steel Replaces the OEM valves & valve springs. Steel, nitrided valves for increased durability and less wear under extreme conditions. Stronger valve springs deal with the extra weight of the steel valves. Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm. Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM